<form class="search-form" role="search" method="get" id="searchform" action="<?php echo home_url('/'); ?>">
  	<div class="mdui-textfield mdui-textfield-floating-label">
  		<label class="mdui-textfield-label" for="sinput">搜索词</label>
  	  	<input class="mdui-textfield-input" id="sinput" type="text"/>
	</div>
</form>